Improvement in street-lamps



C. 0. CHARLES.

STREET LAMPS. No.181,770. Patented Sept.5,1876.

flzZwMed I hwnfpr M 3 mm 424M 4 aw the pipe.

UNITED STATES PATENT OE IGE.

CHARLES 0. CHARLES, OF ENGLEWOOD, ILLINOIS.

IMPROVEMENT IN. STREET-LAMPS.

Specification forming part of Letters Patent No. 181,770, datedSeptember 5, 1876; application filed June 17,-1876.

ment-s, reference being had to the accompanying drawing, forming a parthereof, and in which- Figure 1 is a side elevation of a street-lampprovided with my improvements and Fig. 2,

a vertical central section through the upper part thereof.

Like letters of reference indicate like parts.

In the drawing, A is the base or bottom of the lamp. B is a socket toreceive a lamppost. (J O are the upright parts of the frame, and areadapted to receive the glass or other transparent sheets usuallyemployed to shield and protect the flame. D is the door. E E are thehorizontal parts of the frame. These parts are arranged between theupper ends of the parts 0 G and the upper part, roof, or reflector ofthe lamp, and are make hollow, and are so united to each other as tomake a continuous chamber. F is a filling-nozzle. G is the oil-cup. H isa feed-pipe, entering the chamber or tank formed by the parts E E. Thispipe also terminates in the oil-cup and I is a cock for regulating theflow of oil through The burner, chimney, and other parts .used inconnection with the oil-cups of kerosene-lamps may be used in connectionwith the cup G. J is the top or roof of the lamp. I make this parttight, and of sheet metal, preferably'of tin or other metal having abright or polished surface, so that the roof will not only protect theflame from wind and rain, but also perform the function of a reflect- Kis the ventilator and smoke-escape, arranged in the apex of the roof.This part is also roofed over, as shown at a. e is an outer perforatedshield, and e is an interior flue, also perforated, as shown at e e. Theperforations 0 should not be arranged directly opposite the perforationsin the shield e, the object being to prevent a direct current of airfrom entering the lamp. The smoke and products of combustionescape-through the upper end of the flue e, which is open for thatpurpose, a space being left between the roof a and the parts below it,as shown at a, so that the smoke may escape freely into the outer air.The flame is supplied with air to support combustion but this air entersonly through the part K, the remaining part of the lamp being.

tight. L L are transparent or translucent strips arranged within thelamp, as shown. These strips are intended to serve as signs to designatethe streets on which thelamps may be arranged, it being understood thatthe names of the street are painted or otherwise marked onthese strips.

The lamp thus constructed is not only cheap and durable, but the oil-cupmay be kept filled with facility. For, so long as any oil remains in thetank formed by the parts E E, the cup Gr may be replenished by turningthe cock I for that purpose. An upward current of air entering thebottom of the lamp would, in cold temperatures, not only tend to congealthe oil in the oil-cup and tank, but would also be liable, by producingfrost on the strips L' L, to injure the letters or signs paintedthereon. For these reasons I have made provision for supplying air onlythrough the top of the lamp, in order that the air may thus be heated tosome extent before it is consumed.

The chief object of my invention is to adapt the lamp to burn kerosenefreely in cold weather, and to prevent the wind from producing aflickering'flame. I therefore make the body or case of the lamp asnearly air-tight as may be possible or practicable, excepting at thetop, so that the air which enters will be heated, and not liable toproduce currents near the flame. The top or roof J, by being made tightand of metal, retains and reflects the heat and light, and thus not onlyperforms the function of a reflector of the light, but also serves tokeep the contents of the tank E E from becoming too thick, in coldweather, to flow freely through pipe H. If the oil should become thickduring the day, it will soon be sufficiently warm after the lamp is,lighted to flow freely.

I am aware that lamps have heretofore been provided with oil-tankscommunicating with the oil-cups, and I do not, therefore, here intend toclaim, broadly, a lamp when provided with an oil-tank communicating withthe oiloup. I am also aware that lamps have heretofore been providedwith reflectors, and with translucent or transparent sign-strips, and Ido not here intend to claim such devices, broadly, for the purposes towhich they have been already applied but,

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-- The combination, in a street-lamp forburning kerosene-oil, of abody or case made airtight, or nearly so,excepting at the top, the metallic roof and reflector J the ventilatorand smoke-escape K, arranged in the top of the case, the tank E E,forming a part of the frame, and supporting the roof J, the filling-pipeH, and a cock arranged in the said pipe, substantially as and for thepurposes specified.

CHARLES 0. CHARLES. Witnesses:

F. F. WARNER, ULLMAN STRONG.

